The filter presented is from 1994 but can be implemented with a more modern equivalent. We found this setting in the National Semiconductor Linear Applications Handbook.
In this circuit of the 80's components of the time are used. The circuit controls a direct current...
This is the basic operational amplifier configuration for gain 10. R2 can be changed to other...
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...